Improved ruby-electric mode
Emacs Lisp
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Due credit: this work was inspired by a code snippet posted by Frederick Ros at

Following improvements were added:

  • handling of strings of type ‘here document’
  • more keywords, with special handling for ‘do’
  • packaged into a minor mode


  1. copy ruby-electric.el into directory where emacs can find it.
  2. modify your startup file (.emacs or whatever) by adding following line:

    (require ‘ruby-electric)

  3. toggle Ruby Electric Mode on/off with ruby-electric-mode.


2005/Jan/14: inserts matching pair delimiters like {, [, (, ‘, “, ’ and | .

2005/Jan/14: added basic Custom support for configuring keywords with electric closing.

2005/Jan/18: more Custom support for configuring characters for which matching expansion should occur.

2005/Jan/18: no longer uses ‘looking-back’ or regexp character classes like [:space:] since they are not implemented on XEmacs.

2005/Feb/01: explicitly provide default argument of 1 to ‘backward-word’ as it requires it on Emacs 21.3

2005/Mar/06: now stored inside ruby CVS; customize pages now have ruby as parent; cosmetic fixes.